Redigit has nothing to do with Starbound. The only cross-over is Tiy, who was an artist, now the lead dev at Chucklefish. I won't even go into the falling-out in the Redigit team or how Red is a humongous piece of ♥♥♥♥.
The reason updates stopped is because Red left to take care of his new born son, which seems reasonable.
But if you've been even paying attention to Terraria lately you'll see that development isn't over anymore. Look at that, new content, made by the original dev.

Also I'm not entirely on-par with you calling the game a "turd" or feeling cheated by it's development. Why would you be angry with it? It's pretty much well-agreed upon by everyone that Starbound is already on a massively higher level than Terraria ever was. Even if it was true that they stopped working on Terraria for Starbound, (which they didn't) I'd think you (or pretty much anyone) would be happy that they're basically making the sequel right afterwards.

I want this, why am I poor.

The price is high not because of the difficulty but because it is impinging on the development teams' vision. Similar to Dell paying millions of dollars to have a movie actor use Dell computers throughout a movie. Swapping out a computer on the set takes about ten minutes of work, but the privilege to decide what's in the movie is costly.